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Old style banjo differential modifications

Discussion in 'The Hokey Ass Message Board' started by Mad Bomber, Dec 25, 2011.

  1. Mad Bomber
    Joined: Dec 23, 2011
    Posts: 3

    Mad Bomber
    Member
    from Missouri

    Greetings,

    Seeking info from the experienced crowd.

    1. Can you make the old style diff into posi track?
    2. Whats the highest gear ratio for the old style diff? Looking for a salt flats gear combination.
    3. Has anyone ever had their oldstyle axles cut for a second key? considering the keys shear quite easily. Want to keep everything as stock as possible, appearance is important.

    Thanks,
    Mad Bomber
    [email protected]
     
    Last edited: Dec 25, 2011
  2. Merry Christmas. I too am interested in the possibility of a posi for these old diff's.
     
  3. gas pumper
    Joined: Aug 13, 2007
    Posts: 2,957

    gas pumper
    Member

    #3. keys shear because the hub and axle taper don't fit good. Clean burrs off, and lap the hub to the axle with valve grinding compound. The key does not take the force, it just located the hub. The taper locks the two parts together. I think 225 ft/lbs on the nut.

    One problem solved.:)
     
  4. juniorsrodshop
    Joined: Oct 9, 2008
    Posts: 266

    juniorsrodshop
    Member
    from nh

    quick change... to get the gearing... dont want to sound like an idiot but you could get a columbia two speed for an extra up top gear.
     

  5. kellys29
    Joined: Jan 31, 2009
    Posts: 23

    kellys29
    Member
    from spokane wa

    change it to drop in axles. old school was 50 merc or F100. today they run 9" axles.

    How do they do that? I am looking into this on a 40 rear, Any help would be great.
    Jeff
     
  6. Jimmy2car
    Joined: Nov 26, 2003
    Posts: 1,707

    Jimmy2car
    Member
    from No. Cal

    1. Can you make the old style diff into posi track?
    2. Whats the highest gear ratio for the old style diff? Looking for a salt flats gear combination.
    3. Has anyone ever had their oldstyle axles cut for a second key? considering the keys shear quite easily. Want to keep everything as stock as possible, appearance is important.

    1) Posi is possible- Hot Rod Works has it, or you can fit a "Lock Rite" yourself.
    2 Probably the highest is a 3.25 ratio without a Quick-change.
    3) You can replace the axles with new style by machine work to the carrier assy, changing the side gears, changing the axle ends, etc. Hot Rod Works does all of this. They are a really good company and extremely helpful. Highly recommend
    Jim
     
  7. 1929CDAN
    Joined: Mar 18, 2006
    Posts: 349

    1929CDAN
    Member

    Do a search for Quickchange information. I posted it a some time ago and has great info that you can use on your banjo with or without a quickchange.
     
  8. What year do you have? Different years different stuff available. What are you going to put it in?

    Charlie Stephens
     
  9. Just as Jimmy2car said - go to Hot Rod Works. They will fix you up with everything you need. Great guys and excellent parts.
    http://www.hotrodworks.com/
     
  10. You can get a Winters QC with a locking differential that will take late 31 spline axles and work with Ford axle bells. By the time you get it all set up you will spend as much or more than the price of Winters package assembly.

    Another option is to use the Hot Rod Works axle conversion kit that retains the stock brakes and spring perches.
     
  11. 1950ChevySuburban
    Joined: Dec 20, 2006
    Posts: 6,187

    1950ChevySuburban
    Member Emeritus
    from Tucson AZ

    Someone on here posted a thread on modifying the ends of the axle tubes to receive 9" axles. I forget who. Good info though.
     
  12. Mad Bomber
    Joined: Dec 23, 2011
    Posts: 3

    Mad Bomber
    Member
    from Missouri

    Thanks for the info, Bomber
     
  13. know this doesn't fit....but does any one remember an artical spread on how to make the old banjo an IRS...like a Vette's....or was that a dream?
     
  14. 17dodgebros
    Joined: Oct 10, 2007
    Posts: 40

    17dodgebros
    Member

    how do u fit the lock rite? anyone have pics?
     
  15. badshifter
    Joined: Apr 28, 2006
    Posts: 3,538

    badshifter
    Member

    Post #38 shows how it's done.

    http://www.jalopyjournal.com/forum/showthread.php?t=586925&showall=1
     
  16. Work4it
    Joined: Dec 11, 2011
    Posts: 67

    Work4it
    Member

    Does anyone have more information on fitting one of these? I have also heard "Goltrack" type can be used. It that is vague. There are some specifics missing.

    What size are the ring gears in our banjos? Mine is 1940 Ford and I want a posi, ain't afraid of machine work or welding.
     

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